<template>
  <basic-container>
    <div>
      <div class="echarts-border">
        <div id="downloadCharts" :style="{width: '100%', height: '400px'}"></div>
      </div>
     <div class="echarts-border">
       <div id="onlineCharts" :style="{width: '100%', height: '400px'}"></div>
     </div>
    </div>
  </basic-container>
</template>
<script>

import * as echarts from 'echarts';


export default {
  name: 'offerCenter',
  props: [],
  data() {
    return {}
  },
  mounted() {
    this.$nextTick(() => {
      this.init()
    })
  },
  methods: {
    init(){
      this.initEcharts('downloadCharts','每日消耗及下载数量')
      this.initEcharts('onlineCharts','素材量-每日提交及在线数')
    },
    getEchartsInst(eleName) {
      let ele = document.getElementById(eleName);
      let myInst = echarts.getInstanceByDom(ele);
      if(myInst) {
        return myInst;
      } else {
        return echarts.init(ele);
      }
    },
    initEcharts(id,title) {
      let myChart = this.getEchartsInst(id)
      let option
      option = {
        title:{
          text:title
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            crossStyle: {
              color: '#999'
            }
          }
        },
        toolbox: {
          feature: {
            dataView: {show: true, readOnly: false},
            magicType: {show: true, type: ['line', 'bar']},
            restore: {show: true},
            saveAsImage: {show: true}
          }
        },
        legend: {
          data: ['蒸发量', '降水量', '平均温度']
        },
        xAxis: [
          {
            type: 'category',
            data: ['1月', '2月', '3月', '4月', '5月', '6月', '7月', '8月', '9月', '10月', '11月', '12月'],
            axisPointer: {
              type: 'shadow'
            }
          }
        ],
        yAxis: [
          {
            type: 'value',
            name: '水量',
            min: 0,
            max: 250,
            interval: 50,
            axisLabel: {
              formatter: '{value} ml'
            }
          },
          {
            type: 'value',
            name: '温度',
            min: 0,
            max: 25,
            interval: 5,
            axisLabel: {
              formatter: '{value} °C'
            }
          }
        ],
        series: [
          {
            name: '蒸发量',
            type: 'bar',
            data: [2.0, 4.9, 7.0, 23.2, 25.6, 76.7, 135.6, 162.2, 32.6, 20.0, 6.4, 3.3]
          },
          {
            name: '降水量',
            type: 'bar',
            data: [2.6, 5.9, 9.0, 26.4, 28.7, 70.7, 175.6, 182.2, 48.7, 18.8, 6.0, 2.3]
          },
          {
            name: '平均温度',
            type: 'line',
            yAxisIndex: 1,
            data: [2.0, 2.2, 3.3, 4.5, 6.3, 10.2, 20.3, 23.4, 23.0, 16.5, 12.0, 6.2]
          }
        ]
      };
      option && myChart.setOption(option);
    },
  }
}
</script>
<style lang="scss">
  .echarts-border{
    width: 80%;
    margin: 0 auto;
    margin-top: 50px;
    box-shadow: 2px 2px 19px 2px rgba(0, 0, 0, 0.18);
    border-radius: 20px;
    padding: 15px;
  }
</style>
